Make the search result component extensible with custom actions

[rbkpro]

1- Add custom action when we click on result raw that can trigger my custom code

Example,

When we click a node from the result I need to test if the node is a custom type and based on that I decide if I will redirect to another view (route) or go the default route (document view)

2- In the search result component, it's good to have the possibility to show custom Icons for custom types.

Finally it worth to mention that I opened this request after the discussion with Denys Vuika on Gitter